Be careful not to overwater. Here in Missouri, if I had herbs in a container, I could water them all I wanted, because it is hot and dry here.
In cool and rainy Ireland, overwatering could cause problems. Let the soil dry before you water, and hope that the garden shop guy used potting mix that drains well, and that the pot itself has holes in the bottom.
Put the pot where it will get sun thru most of the day--most herbs love sun and heat.
I just haven't been the same
since that house fell on my sister.